Plastic cap



The following design applications have the same inventors, have been filed concurrently herewith, have the same title, and have related subject matters: application Ser. No. 29/407,428; application Ser. No. 29/407,430; application Ser. No. 29/407,432; and application Ser. No. 29/407,434.

FIG. 1 is a front, top and right side perspective view of a plastic cap showing the new design.

FIG. 2 is a front, top and left side perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is rear view thereof.

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof. 

The ornamental design for a plastic cap, as shown and described. 